JP2011246026A - Fixture fixing article to heat insulation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain tight fixing superior in heat insulation performance while preventing breakage of a heat insulation panel and to improve fixing work efficiency in fixing an article to be fixed to the heat insulation panel.SOLUTION: A headed bolt 22 made of a metal is screw connected to one end of a bar-like body 21 made of a synthetic resin, a threaded bar 23 is screw connected to the other end, an end face nut 24 made of a metal is screw connected to the threaded bar 23 so as to contact the end face of the bar-like body 21, and thereby a fixture body 2 is constructed. Also, the fixture body 2 is arranged so as to penetrate the heat insulation panel and the article LR to be fixed, and the article LR to be fixed is fixed to the heat insulation panel by a tightening nut 3. Tight fixing is allowed because a load applied to the article LR to be fixed is supported by entire heat insulation panel, and heat transfer is blocked by presence of the bar-like body 21 made of a synthetic resin. Furthermore, breakage of a screw connection part caused by tightening of the tightening nut 3 is prevented by the end face nut 24 made of the metal.

Description

  The present invention relates to a fixing tool having heat insulation properties, for example, a fixing tool suitable for attaching a rail for cargo binding to a heat insulating panel of a box-type cargo bed of a refrigeration vehicle.

  With the recent diversification of consumer life and the pursuit of convenience, in the field of freight transportation by trucks and the like, the demand for transportation of frozen products or fresh foods is increasing. For transporting freight such as frozen goods, a closed-type box-type cargo bed surrounded by heat insulation panels is used. There is also a growing demand for large box-type cargo beds. An increasing number of vehicles are called temperature management vehicles that strictly manage the temperature in the cargo compartment so that it does not deviate from the appropriate range according to the cargo such as frozen goods to be loaded.

  For heat insulation panels such as refrigerator trucks, a sandwich structure panel is used in which a heat insulation material as a core material is arranged between the outer plate on the outside of the box-type carrier and the inner plate on the cargo compartment side, and these are laminated. . A thin metal plate such as aluminum or stainless steel is often used as the outer plate and the inner plate, and a foamed synthetic resin such as polystyrene foam is often used as the heat insulating material. As the heat insulating material serving as the core material, a heat insulating material having a large thickness is used in order to ensure heat insulating performance as the set temperature in the cargo compartment becomes lower and the difference from the outside air temperature increases.

By the way, in a box-type loading platform of a freight transport vehicle, the cargo loaded while the vehicle is running is fixed with a belt or rod for binding so that the cargo loaded on the vehicle does not slip or collide with each other and be damaged. . A rail for latching a binding belt or the like is generally installed on the wall surface of the cargo box of the box-type cargo bed and is called a lashing rail.
In a box-type loading platform such as a freezer car, the lashing rail is fixed to the inner plate on the cargo compartment side of the heat insulating panel, but the inner plate is a thin plate made of synthetic resin such as aluminum and is strong. And the rigidity is small. On the other hand, a large load is applied to the lashing rail that holds the belt for tying the cargo, etc. due to the inertial force that acts on the cargo while the vehicle is running. There is a risk. In addition to the lashing rail, the evaporator (evaporator) and fan of the refrigeration equipment that cools the cargo compartment, a fan, a shelf for loading cargo, etc. are attached to the heat insulation panel of a box-type cargo bed such as a freezer car. Insulation panels may also be destroyed at the locations where they do.

When an article is fixed to a heat insulating panel having a sandwich structure, several fixing methods for preventing breakage by increasing the strength of the fixing portion are known, and these are shown in FIG. In FIG. 5, the outer plate of the heat insulating panel is represented by OP, the inner plate is represented by IP, and the heat insulating material is represented by IN.
The fixing method shown in FIG. 5A is a method of fixing a relatively thick reinforcing plate RP made of steel having a screw formed in a recess formed by cutting the heat insulating material IN, and fixing it by bonding or the like, and using a bolt BT. An article to be fixed such as the lashing rail LR is fixed.
The fixing method shown in FIG. 5B includes a cylindrical synthetic resin holding member (anchor) AN, in which a metal bolt BT is integrally incorporated, and the insulating member IN is cut to form a holding member AN in a recess. It is inserted and fixed around the periphery. Articles such as the lashing rail LR are fixed to the threaded portion of the bolt BT protruding from the inner plate IP with a nut.

  5 (a) and 5 (b), the reinforcing plate RP and the holding member AN are embedded in the recess of the heat insulating material IN, and then the inner plate IP provided with holes through which the bolt passes is laminated and fixed by bonding or the like. Will be. In some cases, a backup plate BP for reinforcement is stacked on the inner side of the inner plate IP.

The fixing method shown in FIG. 5C uses a metal long bolt that penetrates the entire insulation panel having a sandwich structure, and protrudes the threaded portion at the tip from the inner plate IP to fix the lashing rail LR or the like with a nut. Is. The head of the long bolt LBT exposed to the outside air is covered with a cap made of synthetic resin, and the heat of the outside air is prevented from being transferred to the cooled cargo room through the long bolt LBT.
FIG. 5D shows an article mounting structure disclosed in Japanese Patent No. 3940516. In this mounting structure, the hinge metal fitting HG for opening and closing is fixed to the outer plate of the heat insulation panel of the double doors placed on the rear side of the box-type loading platform, and the cylindrical color PC made of synthetic resin is attached inside. It inserts in the hole formed in board IP and heat insulating material IN. The collar PC is provided with a flange LD that engages with the inner plate IP and an inner hole IH, and a bolt BT that penetrates the collar PC and the outer plate OP is attached to the outer plate OP side of the inner hole IH. The hinge fitting HG is fixed to the bolt BT with a nut NT.

  5 (c) and 5 (d) are configured to support the load throughout the thickness direction of the heat insulation panel, the strength and the like of the portion to which the article is to be fixed are significantly increased. In the mounting structure shown in FIG. 5 (d), in order to improve the heat insulation performance, a cylindrical collar PC made of synthetic resin is used, and the end of the internal hole IH is closed with a cap SL. The contact between the bolt BT and the cool air in the cargo compartment is cut off.

Japanese Patent No. 3940516

  When fixing an article to an insulation panel with a sandwich structure using a fixing tool, the strength of the fixing part is increased, and at the same time, heat is not transferred through the fixing tool itself, and the fixing work is facilitated. It is desirable to plan. As described above, although there are various methods for fixing the article to the heat insulating panel, it is not always satisfactory when the fixing method of FIG. 5 is viewed from such a request, and there are problems in the following points. .

  In the fixing method shown in FIGS. 5A and 5B in which the reinforcing plate and the holding member are embedded in the recess of the heat insulating material, the reinforcing plate is fitted in the work process before the inner plate of the heat insulating panel is stacked and fixed on the heat insulating material. It is necessary to process the concave portion to be accurately positioned and dimensioned, and then apply an appropriate amount of adhesive to fix the reinforcing plate or the like, which is not easy. In particular, the heat insulation panel of a box-type carrier for a vehicle is a large part, and the lashing rail is a long part. It becomes very difficult to install etc. In order to secure the strength of the fixing portion, a material having a large area such as a reinforcing plate is used. Therefore, a fixing method using a reinforcing plate or the like cannot be adopted in a narrow portion.

  In the method of FIG. 5 (c), which is fixed using a metal long bolt that penetrates the heat insulating panel, the load is supported by the entire heat insulating panel, and the strength of the portion where the article is fixed can be increased. After completing the heat insulation panel by laminating the inner and outer plates on the heat insulating material, the through holes through which the long bolts are passed are precisely processed with a drill etc. according to the position of the attachment holes of the article to be fixed such as the lashing rail can do. However, since the metal long bolt penetrates the heat insulation panel, heat transfer occurs between the inside and the outside of the heat insulation panel via the long bolt. Although the head of the long bolt is covered with a synthetic resin cap, the head is cooled by the cool air inside the cargo compartment, causing condensation, which may damage the appearance and corrode the metal near the head. .

In the fixing method shown in FIG. 5 (d), a synthetic resin collar having a low thermal conductivity is used to improve heat insulation, and the direct contact between the metal bolt and the cool air in the cargo compartment is blocked by the cap. is doing. However, this fixing method increases the cost because it uses a collar having a complicated shape. In addition, work to form a large diameter hole into which the collar is inserted and a small diameter hole through which the bolt passes concentrically on separate members of the heat insulation panel, while placing parts on these, The work of fixing is not easy.
An object of the present invention is to provide a fixing tool with excellent heat insulating properties that realizes strong fixing of an article to be fixed while preventing breakage and deformation of the heat insulating panel, and that can be fixed accurately with simple work. Thus, the above-mentioned problems are solved.

In view of the above-mentioned problems, the present invention is made of a metal made by penetrating a heat-insulating panel through a fixing body having a bar-shaped main body made of a synthetic resin having a significantly lower thermal conductivity than that of a metal, and planted at the end of the bar-shaped main body. An end face nut that protects the synthetic resin rod-shaped main body is screwed to the screw rod, and then the article to be fixed is fixed using a tightening nut. That is, the present invention
“A fixing tool including a fixing tool body and a metal clamping nut, and fixing an article to be fixed to a heat insulating panel on which a heat insulating material is arranged,
The fixing tool body is a metal body having a uniform cross-section made of synthetic resin having screw holes formed at both ends, and a head that is screwed to the screw hole at one end and is larger than the rod-shaped body section. A bolt with a head made of metal and a screw rod made of metal that is screwed into the screw hole at the other end and protrudes from the other end of the rod-shaped main body, and is in contact with the end surface of the rod-shaped main body A metal end face nut screwed to the screw rod;
The fixing tool body is installed so as to penetrate the heat insulating panel and the article to be fixed, and the fastening nut is screwed to the tip portion of the screw rod to fix the article to be fixed to the heat insulating panel.
It is a fixing tool characterized by this.

  As described in claim 2, it is preferable that the heat insulating panel has a sandwich structure in which metal thin plates are laminated on both sides of a heat insulating material made of foamed synthetic resin. In addition, as described in claim 3, it is preferable that the fixing tool main body is made of a fiber reinforced synthetic resin in which the rod-shaped main body portion has a circular cross section.

  According to the fourth aspect, the screw coupling portion between the bolt with the head and the screw rod and the screw hole of the rod-shaped main body portion is bonded, and the end nut and the end surface of the rod-shaped main body portion are in contact with each other. The parts can be glued.

  As described in claim 5, a seal member can be interposed between the head of the bolt with the head and the end surface of the rod-shaped main body.

  According to a sixth aspect of the present invention, the present invention is suitable as a fixture for fixing a lashing rail for binding cargo to a heat insulating panel constituting a wall surface of a box-type cargo bed of a vehicle. In this case, when the end portion of the heat insulation panel is attached to a pillar placed at a corner portion of the box-type cargo bed, the fixing tool main body is attached to the heat insulation panel as described in claim 7. It is preferable to install the lashing rail and the column so as to penetrate the lashing rail and to fix the end of the lashing rail to the heat insulating panel with the tightening nut.

  The fixing tool according to the present invention for fixing an article to be fixed to a heat insulating panel is provided with screw holes at both ends of a synthetic resin rod-shaped main body, and a screw with a metal head is screwed into one screw hole. Then, a metal screw rod is implanted in the other screw hole to form a fixing tool main body, and this fixing tool main body is installed so as to penetrate the heat insulation panel and the article to be fixed, and then the tip of the screw rod. The article to be fixed is fixed by screwing the tightening nut. Since the fixing tool main body penetrates the heat insulating panel to fix the object to be fixed, and the load acting on the object to be fixed is supported by the entire heat insulating panel, even if the surface portion of the heat insulating panel is a thin plate with low strength, etc. The deformation and destruction can be prevented. Further, in the fixing tool of the present invention, the article to be fixed is coupled to the screw rod at the tip of the stick-shaped fixing tool main body by a tightening nut, and the fixing method is a form equivalent to a fixing method using a normal bolt / nut. It becomes. Therefore, there is no need to install a reinforcing plate or the like in advance on the heat insulation panel, and the through hole that passes through the fixing tool body is accurately processed and fixed to the finished heat insulation panel according to the position of the article to be fixed. It can be performed.

  The stick main body of the present invention is interposed with a rod-shaped main body made of synthetic resin. Synthetic resin has a much lower thermal conductivity than metal, so even if the fastener body penetrates the heat insulation panel, the gap between the metal head bolts and screw rods fixed at both ends of the rod-shaped body The heat transfer is interrupted, and heat transfer does not occur between the inside and outside of the heat insulation panel via the fixing tool. Further, by adjusting the length of the rod-shaped main body, the fixing device main body can be made to correspond to the heat insulation panels having different thicknesses, and common parts can be used for the headed bolt and the screw rod.

A metal end face nut is screwed to the screw rod for fastening the tightening nut so as to come into contact with the end face of the rod-like main body. When a tightening torque is applied to the tightening nut to secure the article to be secured, a large torque acts on the threaded rod due to the friction of the contact surface between the tightening nut and the threaded rod. It directly acts on the screw coupling portion of the screw hole of the rod-shaped main body made of resin. Synthetic resin is excellent in heat insulation, but is inferior to metal such as steel in terms of strength and surface hardness. Therefore, there is a possibility that the screw hole portion is deformed and damaged by tightening torque.
In the present invention, the tightening torque acting on the screw rod also acts as a frictional force on the contact surface between the end surface nut and the end surface of the rod-shaped main body. That is, the tightening torque for fixation is shared and received by the screw hole portion and the entire rod-shaped main body portion. In addition, since the metal end face nut is in close contact with the end face of the rod-shaped main body portion and the end face is protected while preventing deformation of the screw hole portion, the screw hole portion is prevented from being damaged due to tightening of the tightening nut.

  The invention of claim 2 is to fix an article to be fixed by applying the fixing tool of the present invention to a heat insulating panel having a sandwich structure in which metal thin plates are laminated on both sides of a heat insulating material made of foamed synthetic resin. Even if it is a foamed synthetic resin or a thin plate having a low strength, it can be firmly fixed. According to a third aspect of the present invention, a rod made of fiber-reinforced synthetic resin having a circular cross section, that is, a FRP round rod is adopted for the rod-like body portion of the fixing tool body. When it is a round bar, it is easy to process the bar-shaped main body part and the through-hole of the heat insulating panel, and FRP has a high tensile strength and the like, so the diameter of the bar-shaped main body part can be reduced and the fixing tool can be made compact. Further, in the invention of claim 4, the screw coupling portion in the rod-shaped main body portion and the contact surface with the end face nut are bonded, the strength is further increased, and the fixing device main body is integrated in advance, and the fixing work is performed. Improves.

  The invention of claim 5 is such that a seal member is interposed between the head of the bolt with the head and the end surface of the rod-like main body, so that, for example, rainwater is provided between the heat insulating panel and the fixing device main body. Can be prevented from entering through. The seal member may be a flat member such as a rubber washer or a circular cross-sectional member such as an O-ring.

According to the sixth aspect of the present invention, the fixing tool of the present invention is applied as a fixing tool for fixing a lashing rail for binding cargo to a heat insulating panel constituting a wall surface of a box-type cargo bed of a vehicle. As described above, the heat insulation panel of the box-type cargo bed is a large article, and a large load acts on the lashing rail based on the inertial force accompanying acceleration / deceleration while the vehicle is running. Therefore, the fixing tool of the present invention is preferably used. It can be called a place.
Here, the load acting on the lashing rail can be supported by both sides of the fixing tool at the intermediate position of the lashing rail, but it must be supported by one side of the fixing tool at the end position of the lashing rail. The heat insulation panel at the end of the rail tends to be more easily destroyed. Since there is usually a column (corner post) placed at the corner of the box-type carrier at the end of the lashing rail, in the invention of claim 7, the fixing tool body is provided with the heat insulating panel and the lashing rail. At the same time, it is installed so as to penetrate the column. As a result, the load applied to the end portion of the lashing rail is also supported by the highly rigid column body, and it is possible to reliably prevent the heat insulating panel from being damaged.

It is the figure which fixed the lashing rail to the heat insulation panel with the fixing tool of this invention. It is a BB cross-sectional enlarged view of FIG. It is a figure which shows the fixing tool of this invention by a single item. It is the figure which fixed the lashing rail to the heat insulation panel with small thickness by the fixing tool of this invention. It is a figure which shows the conventional various adhering means which adheres a to-be-adhered article to a heat insulation panel.

Hereinafter, the fastener of the present invention will be described with reference to the drawings. 1 and 2 show an embodiment in which a lashing rail is fixed to a heat insulating panel of a box-type cargo bed of a vehicle using the fixing tool of the present invention. The heat insulating panel of this example is that of FIG. In the same manner as the above, a sandwich structure in which an outer plate OP made of a thin aluminum plate and an inner plate IP are laminated on both sides of a heat insulating material IN made of foamed synthetic resin.
FIG. 1 is a view of a heat insulation panel forming a right side wall of a box-type cargo bed of a vehicle, as viewed from the cargo compartment near a rear end portion where a lashing rail LR is mounted. The lashing rail LR is a long steel or aluminum part formed with a large number of openings OG for holding a binding belt or the like at regular intervals and extending to the vicinity of the front end of the box-type cargo bed. As shown in the attachment diagram (A-A cross section), the cross section of the lashing rail LR is a hat shape, and is attached to the inner plate IP of the heat insulation panel by a fixture such as a blind rivet BR. The lashing rail LR may be adhered and attached, or a reinforcing backup plate may be interposed.

  As shown in FIG. 2, which is an enlarged cross-sectional view taken along the line B-B of FIG. 1, the rear end portion of the heat insulation panel is connected to a corner post CP which is a pillar body installed at the rear corner of the box-type cargo bed. The corner post CP is a columnar member with high strength and rigidity that supports the rear part of the box-type cargo bed and supports the rear door (not shown), and the outer plate OP at the rear end of the heat insulation panel is in close contact with the corner post CP. And an outer plate portion CPO to be connected. A connecting portion between the inner plate IP and the corner post CP of the heat insulating panel is covered with a thin plate cover.

  The fixing tool 1 of the present invention is provided at the end of the lashing rail LR, and the lashing rail LR is fixed to the heat insulating panel. As shown in FIG. 3A, which is a single item diagram of the fixing tool 1, the fixing tool includes a fixing tool body 2 and a metal fastening nut 3. The fixing tool main body 2 has a rod-shaped main body portion 21 made of a synthetic resin having a uniform cross section with screw holes formed at both ends (see FIG. 3B). A screw 22 with a metal head having an enlarged head than the rod-shaped main body 21 is screwed to the screw hole at one end of the rod-shaped main body 21 and the rod-shaped main body is inserted into the screw hole at the other end. A metal screw rod 23 protruding from the other end of the screw is implanted by screw connection like an implanted bolt. Further, a metal end face nut 24 is screwed to the screw rod 23 so as to come into contact with the end face of the rod-like main body portion 21, and the rod-like main body portion 21, the head-attached bolt 22, the screw rod 23 and the end face nut 24 are used. The fixing tool main body 2 is configured.

  In this embodiment, the rod-shaped main body portion 21 is a round bar having a circular cross-sectional shape, and the material thereof is a composite of a fiber reinforcing material such as glass fiber or carbon fiber and a synthetic resin such as polyester resin or epoxy resin. The material is fiber reinforced plastic (FRP). As materials for the head-attached bolt 22, the screw rod 23, the end face nut 24, and the tightening nut 3, steel materials similar to those of ordinary bolts and nuts are used. By adopting fiber reinforced plastic, sufficient tensile strength can be ensured even if the rod-shaped main body 21 has a small diameter, and heat transfer between the headed bolt 22 and the screw rod 23 is cut off even if it is a steel material. The

  In order to fix the end of the lashing rail LR, as shown in FIG. 2, the fixing tool body 2 is passed through the heat insulating material IN, the inner plate IP, and the outer plate OP of the heat insulating panel, and further, outside the corner post CP. The plate portion CPO is installed through, and the lashing rail LR is fastened to the tip of the screw rod 23 by the fastening nut 3. At this time, the tightening torque transmitted through the contact surface between the tightening nut 3 and the screw rod 23 also acts on the entire end surface of the rod-shaped main body portion 21 by the end surface nut 24, so that the screw hole 23 is coupled to the screw hole. The applied torque is reduced. Further, the end face nut 24 that is in close contact with the end face of the rod-shaped main body portion 21 suppresses deformation of the screw hole portion while protecting the end face, so that the screw hole of the synthetic resin rod-shaped main body portion 21 caused by tightening of the tightening nut 3 is achieved. Can be prevented from being damaged.

  The fixing tool body 2 passes through the heat insulating panel and the outer plate portion CPO of the corner post to fix the end portion of the lashing rail LR, and the load F acting on the lashing rail LR is applied to the entire heat insulating panel and the corner post CP. Is supported by Therefore, even if the load F acting on the lashing rail LR is large, a sufficiently strong support is possible, and the heat insulation panel is not deformed or broken. When the corner post is fixed at a position where it does not exist, a reinforcing backup plate can be interposed as required. In this embodiment, a flat washer 4 made of rubber, which is a sealing member, is disposed between the head of the bolt 22 with head and the end surface of the rod-shaped main body 21 so as to be in close contact with the outer plate portion CPO of the corner post. Thus, rainwater or the like is prevented from entering through the gap between the heat insulating panel and the fixing tool main body 2. Instead of the washer 4, the head of the bolt 22 with head can be covered with a synthetic resin cap as shown in FIG.

  FIG. 4 shows an embodiment in which a lashing rail is fixed to a heat insulation panel having a relatively small thickness by using the fixing tool 1 of the present invention. The fixing tool body 2 in the embodiment of FIG. 4 differs from the fixing tool main body of FIG. 2 only in that the length of the rod-shaped main body portion 21 is short. The same thing as the fixing tool main body of FIG. 2 is used. That is, the fixing tool of the present invention can be adapted to heat insulating panels having different thicknesses by adjusting the length of the rod-shaped main body portion 21, and other common parts can be used. Further, in the fixing tool of the present invention, the article to be fixed is fixed to the screw rod 23 at the tip of the stick fixing main body 2 by the tightening nut 3, and the fixing method is a normal fixing method using bolts and nuts. Therefore, the fixing work is very easy.

  As described in detail above, the present invention is a fixing tool for fixing an article to be fixed to a heat insulating panel, and has a fixing tool body having a rod-shaped main body portion made of synthetic resin excellent in heat insulating properties, penetrated through the heat insulating panel, The article to be fixed is fixed by a simple operation while preventing the thermal insulation panel from being broken. In the above embodiment, the case where the lashing rail is fixed to the heat insulating panel of the box-type cargo bed for the vehicle is described. However, the fixing tool of the present invention fixes, for example, a hinge fitting to the heat-insulating panel of the door of the box-type cargo bed. Sometimes, it can be used when an article is fixed to a heat insulating panel of a refrigerated warehouse. In addition, it is apparent that various modifications can be made to the embodiment, such as a polygonal cross-sectional shape of the rod-shaped main body portion of the fixing tool main body.

DESCRIPTION OF SYMBOLS 1 Adhering tool 2 Adhering tool main body 21 Bar-shaped main-body part (made of synthetic resin)
22 Bolt with head (metal)
23 Screw rod (made of metal)
24 End nut (made of metal)
3 Tightening nut 4 Rubber washer (seal member)
IN Heat insulating material IP Inner plate OP Outer plate CP Corner post (column)

Claims (7)

A fixing tool including a fixing tool main body and a metal clamping nut, and fixing an article to be fixed to a heat insulating panel in which a heat insulating material is arranged,
The fixing tool body is a metal body having a uniform cross-section made of synthetic resin having screw holes formed at both ends, and a head that is screwed to the screw hole at one end and is larger than the rod-shaped body section. A bolt with a head made of metal and a screw rod made of metal that is screwed into the screw hole at the other end and protrudes from the other end of the rod-shaped main body, and is in contact with the end surface of the rod-shaped main body A metal end face nut screwed to the screw rod;
The fixing tool main body is installed so as to penetrate the heat insulating panel and the article to be fixed, and the fastening nut is screwed to a tip portion of the screw rod to fix the article to be fixed to the heat insulating panel. Fastening tool characterized by. The said heat insulation panel is a fixing tool of Claim 1 which has a sandwich structure where the metal thin plate was laminated | stacked on both sides of the heat insulating material made from a foaming synthetic resin. The said fixing tool main body is a fixing tool of Claim 1 or Claim 2 provided with the said rod-shaped main-body part made from a fiber reinforced synthetic resin of circular cross section. The screw coupling portion of the bolt with the head and the screw rod and the screw hole of the rod-shaped main body is bonded, and the contact portion of the end face nut and the end surface of the rod-shaped main body is bonded. The fixing tool according to claim 3. The fixing tool according to any one of claims 1 to 4, wherein a seal member is interposed between a head of the bolt with the head and an end surface of the rod-shaped main body. The said heat insulation panel is a heat insulation panel which comprises the wall surface of the box-type loading platform of a vehicle, and the said to-be-adhered article is a lashing rail for cargo binding, The Claim 1 thru | or 5 Fastener. An end of the heat insulation panel is attached to a pillar placed at a corner of the box-type cargo bed, and the fixing tool main body is installed so as to penetrate the heat insulation panel, the lashing rail, and the pillar. The fixing tool according to claim 6, wherein an end portion of the lashing rail is fixed to the heat insulating panel by the tightening nut.

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